abs polyester insert filter plate disc vacuum filter

Abstract

The application discloses an ABS polyester plug filter plate disc vacuum filter and relates to the field of solid-liquid separation.The ABS polyester plug filter plate disc vacuum filter comprises a cylinder, a sealing element, side covers, a bottom pipe and a shaft coupling, two groups of mirror image symmetrical side covers are arranged on the two sides of the horizontally arranged cylinder through bolts, and the outer ring surface of the cylinder is fixedly connected with a liquid inlet pipe and a liquid outlet pipe.The shaft coupling drives the intermittent slow rotation of the ring disc frame, the design that the arc length of the fan-shaped area of the adjacent filter plate assembly is smaller than the arc length between the liquid inlet pipe and the liquid outlet pipe is utilized, the filter plate always receives the water source, continuous filtration without interruption is realized, the negative pressure formed by the liquid outlet pipe and the diaphragm pump is matched, the gravity is superposed to accelerate the water source to pass through the filter plate assembly, the filter plate adopts the composite structure of "polyester outer layer coarse filter + high polymer filter screen layer fine filter + ABS resin layer support", the filtration precision is ensured, and the particles are conveniently caused to slide off.Compared with traditional one-time filtration, the filtrate is higher in clarity, and the problem of residual mineral material filtration is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid-liquid separation, in particular to an ABS polyester plug-in filter plate disc vacuum filter. BACKGROUND

[0002] In mine production, from the crushing of raw ore, ore grinding to flotation / concentration and other beneficiation processes, a large amount of ore slurry (such as concentrate slurry, tailings slurry) with high solid content and complex composition will be produced, which needs to be separated by a filtering device to realize "solid-liquid separation". Solid-liquid separation is a key process in the core links of ore dressing, tailings treatment, and concentrate dewatering, which directly affects the production efficiency, resource recovery rate, and environmental compliance of the mine.

[0003] In the wet processing process of the mining, coal, metallurgy and other industries, the solid-liquid separation process usually needs to be treated by multiple stages to realize resource recovery and wastewater purification. Although primary filtration equipment (such as thickeners, ordinary vacuum filters) can remove most solid particles, but for fine particles, its separation efficiency is often insufficient, resulting in 1%-3% valuable particles remaining in the drainage, which not only causes resource waste, but also increases the subsequent water treatment load. It is just for this technical pain point that the ABS polyester plug-in filter plate disc vacuum filter for secondary filtration is developed. SUMMARY

[0004] The purpose of the present application is to provide an ABS polyester plug-in filter plate disc vacuum filter to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: an ABS polyester plug-in filter plate disc vacuum filter, comprising a cylinder, a sealing element, a side cover, a bottom pipe and a shaft coupling, two groups of mirror-symmetrical side covers are installed on both sides of the horizontally arranged cylinder by bolts, the outer ring surface of the cylinder is fixedly connected with a liquid inlet pipe and a liquid outlet pipe, a long arc groove is formed in the inner wall of the cylinder, the liquid outlet pipe is located obliquely below the liquid inlet pipe and the interface is located inside the long arc groove, a rotating filter mechanism is fixedly installed on the outer ring surface of the shaft coupling and located in the inner cavity wall of the cylinder, a discharge pipe is installed on the upper part of one group of side covers, and a pushing mechanism is horizontally installed on the upper part of the other group of side covers.

[0006] The rotating filter mechanism comprises a ring disc frame and a plurality of filter plate assemblies arranged in an annular array at the edge of the ring disc frame, the arc length of the fan-shaped area of two adjacent filter plate assemblies is less than the arc length of the distance between the liquid inlet pipe and the liquid outlet pipe, a diaphragm pump is connected to the liquid outlet pipe to form a negative pressure, the filter plate assembly comprises a plate frame and a polyester outer layer, a high molecular filter screen layer and an ABS resin layer fixedly installed inside the plate frame, the high molecular filter screen layer and the ABS resin layer are connected in a composite manner, and two polyester outer layers are connected in a composite manner on the other side of the high molecular filter screen layer and the ABS resin layer, respectively.

[0007] Two sides of the ring disc holder and the nearest position of the adjacent two groups of filter plate assemblies are provided with a ring-shaped array distributed slag outlet, the pushing mechanism comprises a pushing plate matched with the slag outlet, the pushing plate penetrates through the two groups of side covers and the two groups of slag outlets, and is used for recycling particles.

[0008] Preferably, the plate frame is slidably installed through the ring disc holder edge clamping groove, the lateral surface of the ring disc holder edge clamping groove is fixedly connected with a horizontal plate, and the one side protrusion of the plate frame is clamped into the middle positioning groove of the horizontal plate.

[0009] Preferably, the lateral surface of the middle positioning groove of the horizontal plate is provided with a buckle, the buckle clamps the middle protrusion of the plate frame, and the inner side surface of the ring disc holder is provided with an inner arc bottom plate.

[0010] Preferably, the ring disc holder is fixedly installed in the middle part of the outer ring surface of the shaft coupling, the shaft coupling penetrates through the middle part of the two side covers, the sealing element is arranged at the rotating interface position of the shaft coupling and the side cover, and the shaft coupling is connected with the power system.

[0011] Preferably, the pushing mechanism further comprises a servo motor, a mounting frame, a bevel gear set, a lead screw, a lead screw nut seat and a push rod, the mounting frame is fixedly connected to the side surface of one of the side covers, the servo motor is fixedly connected to one end of the mounting frame, and the rotating shaft of the servo motor is drivingly connected with the bevel gear set.

[0012] Preferably, the bevel gear set is drivingly connected to one end of the lead screw, and the two ends of the lead screw are rotatably connected to the inside of the mounting frame through bearings.

[0013] Preferably, the lead screw is drivingly connected to the middle part of the lead screw nut seat, and the wing plates at the two ends of the lead screw nut seat are slidably connected to the inside of the mounting frame through guide rails.

[0014] Preferably, the push rod is fixedly connected to the other side of the lead screw nut seat, the pushing plate is fixedly connected to the other end of the push rod, and the push rod is slidably connected with one of the side covers.

[0015] Preferably, the bottom pipe is connected with a valve and fixedly communicated with the lower end of the cylinder, and the upper part of the cylinder is provided with a plate changing window.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. In this invention, the ring frame is driven by a coupling to rotate intermittently and slowly, allowing the filter plate assembly to remain at the inlet pipe interface for a sufficient time, ensuring that the mineral material and water source fully contact the filter plate. Simultaneously, the design of the fan-shaped area of ​​adjacent filter plate assemblies having an arc length smaller than the arc length of the distance between the inlet and outlet pipes ensures that a filter plate always receives water, achieving continuous and uninterrupted filtration. Combined with the negative pressure created by the diaphragm pump connected to the outlet pipe, and the effect of gravity, the water source passes through the filter plate assembly more quickly. Furthermore, the filter plate adopts a composite structure of "polyester outer coarse filtration + polymer filter mesh layer fine filtration + ABS resin layer support," ensuring both filtration accuracy and facilitating particle sliding. Compared to traditional single-stage filtration, the filtrate is clearer, effectively solving the problem of mineral material filtration residue.

[0018] 2. In this invention, the motor power is converted into the rotational motion of the lead screw through a bevel gear set. Then, with the cooperation of the lead screw nut seat and the guide rail, the rotational motion is converted into the linear extension and retraction motion of the push plate. The key innovation lies in the precise linkage between the push plate action and the intermittent rotation rhythm of the filter plate assembly. When a set of filter plates is filtering at the inlet pipe, the slag outlet of the previous set of filter plates is precisely aligned with the push plate. The servo motor precisely controls the push plate to push out for slag removal, and immediately retracts after slag removal to avoid collision with the rotating filter plates. Simultaneously, the inner arc bottom plate on the inner side of the ring plate guides the particles to slide to the bottom, facilitating thorough slag removal by the push plate, improving particle recovery rate, eliminating the need for manual intervention, and reducing labor costs.

[0019] 3. In this invention, a replacement window is provided on the upper part of the cylinder. Combined with the installation structure of "fastener + slot + positioning slot" of the filter plate assembly, there is no need to disassemble the side cover when replacing the filter plate. The old filter plate can be pulled out and the new filter plate can be installed by opening the fastener. The replacement time of a single filter plate is shortened, which reduces equipment downtime for maintenance and ensures improved operation and maintenance efficiency. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the ABS polyester insert filter plate vacuum filter of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram showing a partial disassembly of the ABS polyester insert filter plate vacuum filter of the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the cylinder body in the ABS polyester insert filter plate vacuum filter of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram of the rotary filtration mechanism and its installation position in the ABS polyester insert filter plate vacuum filter of the present invention. Figure 1 ;

[0024] Figure 5 This is a three-dimensional structural diagram of the rotary filtration mechanism and its installation position in the ABS polyester insert filter plate vacuum filter of the present invention. Figure 2 ;

[0025] Figure 6 It is the ABS polyester plug-in filter plate disc vacuum filter machine in the three-dimensional structure diagram of rotating filter mechanism;

[0026] Figure 7 It is the ABS polyester plug-in filter plate disc vacuum filter machine in the three-dimensional structure diagram of pushing mechanism;

[0027] Figure 8 It is the ABS polyester plug-in filter plate disc vacuum filter machine in the local plane structure diagram of filter plate assembly.

[0028] In the figure: 1, cylinder; 2, discharge pipe; 3, sealing element; 4, side cover; 5, liquid inlet pipe; 6, liquid outlet pipe; 7, bottom pipe; 8, rotating filter mechanism; 81, ring disc frame; 811, horizontal plate; 812, buckle; 813, inner arc bottom plate; 82, filter plate assembly; 821, plate frame; 822, polyester outer layer; 823, high molecular filter screen layer; 824, ABS resin layer; 83, slag outlet; 9, pushing mechanism; 91, servo motor; 92, mounting frame; 93, conical gear set; 94, lead screw; 95, lead screw nut seat; 96, push rod; 97, push plate; 10, shaft coupling; 11, plate changing window; 12, long arc groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Embodiment one: refer to Figures 1-8The ABS polyester plug filter plate disc vacuum filter machine is shown, including cylinder 1, sealing element 3, side cover 4, bottom pipe 7 and shaft coupling 10, two groups of mirror image symmetrical side covers 4 are bolted on both sides of the horizontally arranged cylinder 1, the outer ring surface of the cylinder 1 is fixedly connected with the liquid inlet pipe 5 and the liquid outlet pipe 6, the inner wall of the cylinder 1 is provided with a long arc groove 12, the liquid outlet pipe 6 is located obliquely below the liquid inlet pipe 5 and the interface is located inside the long arc groove 12, the outer ring surface of the shaft coupling 10 and located in the inner cavity wall of the cylinder 1 is fixedly installed with a rotary filter mechanism 8, one group of side covers 4 is installed with a discharge pipe 2, the other group of side covers 4 is installed with a pushing mechanism 9, the rotary filter mechanism 8 includes a ring disc frame 81 and a plurality of filter plate assemblies 82 installed in the edge ring array, the arc length of the fan-shaped area of the two adjacent filter plate assemblies 82 is less than the arc length of the distance between the liquid inlet pipe 5 and the liquid outlet pipe 6, the liquid outlet pipe 6 is connected with a diaphragm pump to form negative pressure, the filter plate assembly 82 includes a plate frame 821 and a polyester outer layer 822, a high molecular filter screen layer 823 and an ABS resin layer 824 fixedly installed inside, the high molecular filter screen layer 823 and the ABS resin layer 824 are connected, the two polyester outer layers 822 are respectively connected on the other side of the high molecular filter screen layer 823 and the ABS resin layer 824, the ring disc frame 81 is provided with a ring array distributed discharge port 83 on both sides and located at the nearest position of the adjacent two filter plate assemblies 82, the pushing mechanism 9 includes a push plate 97 matched with the discharge port 83, the push plate 97 penetrates through the two groups of side covers 4 and the two groups of discharge ports 83, and is used for recycling particles, the ring disc frame 81 is fixedly installed in the middle part of the outer ring surface of the shaft coupling 10, the shaft coupling 10 penetrates through the middle part of the two side covers 4, the sealing element 3 is arranged at the rotating interface position of the shaft coupling 10 and the side cover 4, and the shaft coupling 10 is connected with a power system.

[0031] In this embodiment, by fixing the two groups of mirror-symmetrical side covers 4 on both sides of the horizontally arranged cylinder body 1 with bolts, the sealing property of the inner cavity of the cylinder body 1 can be ensured, and the sealing element 3 at the rotating interface between the shaft coupling 10 and the side cover 4 can further avoid the leakage of water source from the rotating gap during the filtering process. When the shaft coupling 10 is connected with the power system and drives the ring disc holder 81 to rotate intermittently and slowly, the filter plate assembly 82 in the annular array at the edge of the ring disc holder 81 also makes intermittent circular motion, and because the arc length of the fan-shaped area of the two adjacent groups of filter plate assemblies 82 is smaller than the arc length of the distance between the liquid inlet pipe 5 and the liquid outlet pipe 6, it can be ensured that there is always a filter plate assembly 82 under the liquid inlet pipe 5 to receive the water source, realizing continuous filtering. The filter plate assembly 82 adopts a composite structure of a polyester outer layer 822, a high-molecular filter screen layer 823 and an ABS resin layer 824, wherein the polyester outer layer 822 can preliminarily intercept larger particles and facilitate the sliding of the particles, the high-molecular filter screen layer 823 can finely filter small impurities, and the ABS resin layer 824 provides structural support for the filter plate, and the three work together to realize efficient solid-liquid separation; the liquid inlet pipe 5 is connected with the water source after the primary filtering of the mineral materials, the liquid outlet pipe 6 is connected with a diaphragm pump to form a negative pressure, which can accelerate the water source to pass through the filter plate assembly 82 in cooperation with the gravity, improve the filtering efficiency, and at the same time, the residual particles are left outside the polyester outer layer 822, when the filter plate assembly 82 is turned to the pushing mechanism 9, the push plate 97 pushes the particles to the discharge pipe 2 through the slag outlet 83, and the bottom pipe 7 can control the discharge of the water stored in the lower part of the inner cavity of the cylinder body 1 through the connected valve, ensuring that the water level in the cylinder body 1 is always lower than the long-arc groove 12, and the water discharged from the bottom pipe 7 reenters the liquid inlet pipe 5 with the water source after the primary filtering, finally effectively reducing the residual mineral materials in the discharged water, and improving the recycling rate of the mineral materials.

[0032] Embodiment two: according to Figure 4 、 Figure 5 and Figure 6 , the plate frame 821 is slidably installed through the edge clamping groove of the ring disc holder 81, the lateral surface of the edge clamping groove of the ring disc holder 81 is fixedly connected with a horizontal plate 811, the protrusion on one side of the plate frame 821 is clamped into the middle positioning groove of the horizontal plate 811, the middle positioning groove of the horizontal plate 811 is provided with a buckle 812 on the side surface, the buckle 812 clamps the middle protrusion of the plate frame 821, and the inner side surface of the ring disc holder 81 and located on both sides of the plate frame 821 is provided with an inner arc bottom plate 813.

[0033] In this embodiment, the plate frame 821 is slidably installed through the edge slot of the ring plate frame 81, which can quickly achieve the initial positioning of the filter plate assembly 82 and the ring plate frame 81. The horizontal plate 811 on the side of the edge slot of the ring plate frame 81 has a central positioning groove that can fit into a protrusion on one side of the plate frame 821, further restricting the radial displacement of the plate frame 821. Then, the buckle 812 on the side of the positioning groove of the horizontal plate 811 can lock the central protrusion of the plate frame 821, which can completely fix the plate frame 821 and prevent the plate frame 821 from loosening or shifting due to centrifugal force or water flow impact when the ring plate frame 81 drives the filter plate assembly 82 to make circumferential movements, thus ensuring the stability of the filtration process. Meanwhile, the inner arc bottom plate 813 on the inner ring surface of the ring plate frame 81 and located on both sides of the plate frame 821 can form an arc-shaped guide surface. When the filter plate assembly 82 rotates away from the liquid inlet pipe 5 and gradually becomes vertical, the particles remaining on its surface can smoothly slide down along the arc surface of the inner arc bottom plate 813 to the bottom of the fan-shaped area, avoiding the accumulation of particles in the connection gap between the plate frame 821 and the ring plate frame 81. This not only facilitates the efficient slag pushing of the subsequent push plate 97, but also reduces the wear of particles on the filter plate assembly 82 and extends the service life of the filter plate. In addition, this "slot + positioning slot + buckle 812" installation structure allows the old filter plate to be pulled out simply by opening the buckle 812 when replacing the filter plate assembly 82, making disassembly and assembly convenient and greatly reducing maintenance time and costs.

[0034] Example 3: According to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the feeding mechanism 9 also includes a servo motor 91, a mounting frame 92, a bevel gear set 93, a lead screw 94, a lead screw nut seat 95, and a push rod 96. The mounting frame 92 is fixedly connected to the side of one of the side covers 4. The servo motor 91 is fixedly connected to one end of the mounting frame 92. The rotating shaft of the servo motor 91 is driven by the bevel gear set 93. The bevel gear set 93 is driven by one end of the lead screw 94. The two ends of the lead screw 94 are rotatably connected to the inside of the mounting frame 92 through bearings. The lead screw 94 is driven by the middle of the lead screw nut seat 95. The two end flanges of the lead screw nut seat 95 are slidably connected to the inside of the mounting frame 92 through guide rails. The push rod 96 is fixedly connected to the other side of the lead screw nut seat 95. The push plate 97 is fixedly connected to the other end of the push rod 96. The push rod 96 is slidably connected to one of the side covers 4. The bottom pipe 7 is externally connected to a valve and fixedly connected to the lower end of the cylinder 1. The upper part of the cylinder 1 is provided with a plate changing window 11.

[0035] In this embodiment, the pushing mechanism 9 is fixed to the side cover 4 through the mounting bracket 92 to form a stable transmission base. When the slag needs to be pushed, the servo motor 91 is started, and the rotating shaft transmits power to the lead screw 94 through the bevel gear set 93. Since the two ends of the lead screw 94 are rotatably connected inside the mounting bracket 92 through bearings, and are in transmission cooperation with the lead screw nut seat 95, the two end wing plates of the lead screw nut seat 95 slide along the inner guide rail of the mounting bracket 92, which can limit the synchronous rotation of the lead screw nut seat 95 with the lead screw 94, and in turn drive the lead screw nut seat 95 to move linearly along the length direction of the lead screw 94, and then push the push plate 97 through the push rod 96 to penetrate out of the slag port 83, and push the particles at the bottom of the fan-shaped area to the discharge pipe 2 for discharge. The servo motor 91 can accurately control the forward and reverse rotation and the rotating speed, and can adjust the extension and retraction time and speed of the push plate 97 according to the intermittent rotation rhythm of the filter plate assembly 82, so as to ensure the accurate cooperation of the slag pushing process and the filtering process, avoid the residue of particles or the collision between the push plate 97 and the filter plate assembly 82, and improve the slag pushing efficiency and the device operation safety. In addition, the plate changing window 11 at the upper part of the cylinder body 1 provides a convenient operation channel for the replacement of the filter plate assembly 82, and the filter plate replacement can be completed without disassembling the side cover 4, further simplifying the maintenance process.

[0036] The use method and working principle of the device: in use, the end of the shaft coupling 10 is connected to the power system, the inlet pipe 5 is connected to the water source after primary filtration of the mineral material, and the outlet pipe 6 is connected to the diaphragm pump and other gas pressure systems. Under the action of external power, the shaft coupling 10 rotates intermittently and slowly, and drives the ring disc holder 81 in the middle of the cylinder body 1 to rotate intermittently, and the ring disc holder 81 drives the multiple groups of filter plate assemblies 82 installed at the edge position to move in a circle intermittently. After the filter plate assembly 82 stays at the interface position of the inlet pipe 5 for a period of time, it moves away from the outlet pipe 6 and approaches the outlet pipe 6 again. After the primary filtered water source enters the cylinder body 1 from the inlet pipe 5, it directly enters the fan-shaped area formed by the adjacent two groups of filter plate assemblies 82 and the ring disc holder 81. Under the action of gravity and negative pressure at the outlet pipe 6, the primary filtered water source of the mineral material impacts the filter plate assembly 82 below, and the water directly passes through the pores of the polyester outer layer 822, the high molecular filter screen layer 823 and the ABS resin layer 824 at the middle position of the filter plate assembly 82, while the remaining particles stay at the outermost side of the polyester outer layer 822. The primary filtered water source of the mineral material is continuously output, and after the filter plate assembly 82 slowly rotates past the inlet pipe 5, the next filter plate assembly 82 continues to appear below the inlet pipe 5 to continue filtering, and the cycle continues.

[0037] And the filter plate assembly 82 gradually slows down to approach the push plate 97, the filter plate assembly 82 gradually becomes vertical, the particles under isolation slide to the bottom of the fan-shaped area, when one of the filter plate assembly 82 stays at the interface position of the inlet pipe 5, the push plate 97 coincides with the previous one of the slag outlet 83, at this time the servo motor 91 is controlled to rotate forward, after the transmission of the bevel gear set 93, the lead screw 94 rotates in the mounting bracket 92 and the middle of the lead screw nut seat 95, the lead screw nut seat 95 moves along the length direction of the lead screw 94, under the limiting sliding action of the wing plate on both sides of the lead screw nut seat 95, the push rod 96 moves linearly in the side cover 4, so as to push the push plate 97 out of the side cover 4, through one of the slag outlet 83 into the fan-shaped area, and push the particles at the bottom of the fan-shaped area to the other slag outlet 83, and then collect and discharge from the discharge pipe 2, then control the servo motor 91 to reverse, the push plate 97 returns to the inside of the side cover 4, at this time the ring disc holder 81 rotates again, so as to realize the recycling of residual particles and further reduce the residual mineral in the water.

[0038] In the filter plate assembly 82 staying stage, most of the filtered water falls in the long arc groove 12 and is directly discharged from the outlet pipe 6, and a small part is stored in the lower part of the inner cavity of the cylinder 1, by controlling the valve outside the bottom pipe 7, the water level inside the cylinder 1 is always lower than the position of the long arc groove 12, and the water discharged by the bottom pipe 7 reenters the inlet pipe 5 with the water source after the first filtration. When the filter plate assembly 82 needs to be replaced, the plate changing window 11 is opened in the shutdown state, the filter plate assembly 82 can be seen, the hasp 812 is opened, the limit of the edge protrusion of the plate frame 821 is removed, the filter plate assembly 82 is pulled out, the new filter plate assembly 82 is installed along the edge clamping groove of the ring disc holder 81, the edge protrusion is embedded in the middle positioning groove of the horizontal plate 811, and the hasp 812 is clamped again to complete the installation. The ring disc holder 81 is rotated to replace other filter plate assemblies 82 in the same way, and the whole disassembly and assembly are convenient and fast.

[0039] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. ABS polyester plug filter plate disc vacuum filter machine, comprising a cylinder (1), a sealing element (3), a side cover (4), a bottom pipe (7) and a shaft coupling (10), characterized in that: Two groups of mirror symmetry side cover (4) are installed on both sides of horizontally arranged cylinder (1) by bolts, the outer ring surface of cylinder (1) is fixedly connected with liquid inlet pipe (5) and liquid outlet pipe (6), the inner wall of cylinder (1) is provided with long arc groove (12), the liquid outlet pipe (6) is located obliquely below the liquid inlet pipe (5) and the interface is located inside the long arc groove (12), the outer ring surface of the shaft coupling (10) and the inner cavity wall of the cylinder (1) are fixedly installed with rotating filter mechanism (8), one group of the upper part of the side cover (4) is installed with discharge pipe (2), and the upper part of the other group of the side cover (4) is horizontally installed with pushing mechanism (9). The rotating filter mechanism (8) comprises ring disc frame (81) and multiple groups of filter plate assemblies (82) arranged in ring shape at the edge of ring disc frame (81), the arc length of the sector area of two adjacent groups of filter plate assemblies (82) is less than the arc length of the distance between liquid inlet pipe (5) and liquid outlet pipe (6), the outer interface of liquid outlet pipe (6) is connected with diaphragm pump to form negative pressure, the filter plate assembly (82) comprises plate frame (821) and polyester outer layer (822), high molecular filter screen layer (823) and ABS resin layer (824) fixedly installed inside plate frame (821), the high molecular filter screen layer (823) and the ABS resin layer (824) are connected in composite, and two groups of polyester outer layer (822) are connected in composite on the other side of high molecular filter screen layer (823) and ABS resin layer (824) respectively. Ring-shaped array distribution of slag outlets (83) are arranged at the two sides of ring disc frame (81) and the nearest position of adjacent two groups of filter plate assemblies (82), the pushing mechanism (9) comprises push plate (97) matched with the shape of slag outlet (83), the push plate (97) penetrates through two groups of side covers (4) and two groups of slag outlets (83) and is used for recycling particles.

2. The ABS polyester thimble plate disc vacuum filter of claim 1, wherein: The plate frame (821) is slidably installed through the edge clamping groove of ring disc frame (81), the side surface of the edge clamping groove of ring disc frame (81) is fixedly connected with horizontal plate (811), and the side of plate frame (821) is clamped into the middle positioning groove of horizontal plate (811).

3. The ABS polyester thimble plate disc vacuum filter of claim 2, wherein: The side surface of the middle positioning groove of horizontal plate (811) is provided with buckle (812), the buckle (812) clamps the middle protrusion of plate frame (821), and the inner side ring surface of ring disc frame (81) and located at both sides of plate frame (821) is respectively provided with inner arc bottom plate (813).

4. The ABS polyester thimble plate disc vacuum filter of claim 3, wherein: The ring disc frame (81) is fixedly installed in the middle part of the outer ring surface of shaft coupling (10), the shaft coupling (10) penetrates through the middle part of two side covers (4), the sealing element (3) is arranged at the rotating interface position of shaft coupling (10) and side cover (4), and the shaft coupling (10) is connected with power system.

5. The ABS polyester thimble plate vacuum filter of claim 4, wherein: The pushing mechanism (9) further comprises servo motor (91), mounting frame (92), bevel gear set (93), lead screw (94), lead screw nut seat (95) and push rod (96), the mounting frame (92) is fixedly connected to the side surface of one group of side covers (4), the servo motor (91) is fixedly connected to one end of the mounting frame (92), and the rotating shaft of the servo motor (91) is drivingly connected with the bevel gear set (93).

6. The ABS polyester thimble plate vacuum filter of claim 5, wherein: The bevel gear set (93) is drivingly connected at one end of a lead screw (94), and both ends of the lead screw (94) are rotatably connected in the interior of a mounting rack (92) through bearings.

7. The ABS polyester thimble plate vacuum filter of claim 6, wherein: The lead screw (94) is drivingly connected at the middle of a lead screw nut seat (95), and both end wings of the lead screw nut seat (95) are slidingly connected at the inner side of the mounting rack (92) through guide rails.

8. The ABS polyester thimble plate vacuum filter of claim 7, wherein: The push rod (96) is fixedly connected at the other side of the lead screw nut seat (95), the push plate (97) is fixedly connected at the other end of the push rod (96), and the push rod (96) is slidingly connected with one of the side covers (4).

9. The ABS polyester thimble plate vacuum filter of claim 1 wherein: The bottom pipe (7) is externally connected with a valve and fixedly connected with the cylinder (1) at the lower end, and the upper part of the cylinder (1) is provided with a plate changing window (11).

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